Immunodeficiency Information and Courses from MediaLab, Inc.
These are the MediaLab courses that cover Immunodeficiency and links to relevant pages within the course.
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| Which one of the following are not associated with a polyclonal (broadbased) increase in gamma globulins? | View Page |
| Each of the following factors has led to the current increase in incidence of listeriosis except: | View Page |
| Infectious Diseases Molecular methodologies can be useful in the detection of a variety of diseases that are important public health issues such as:Chlamydia trachomatis (CT) Neisseria gonorrhoeae (GC)Human papillomavirus (HPV)Human Immunodeficiency Virus (HIV)Herpes Simplex Virus (HSV)Cytomegalovirus (CMV)In many clinical laboratories, traditional methods have been replaced by molecular methodologies because testing can occur for several pathogens in a single specimen. This is termed multiplex testing. | View Page |
| Retrovirus The Human Immunodeficiency Virus type-1 (HIV) belongs to the Family Retroviridae.In HIV, RNA is the template for the synthesis of DNA. This differs from most cellular biochemistry in which DNA is used as the template for the synthesis of RNA.The enzyme that transcribes the RNA for the synthesis of DNA is called reverse transcriptase.Because of the enzyme's activity, HIV is known as a retrovirus - retro implying reverse. | View Page |
| Introduction Acquired Immunodeficiency syndrome (AIDS) is caused by the Human Immunodeficiency virus (HIV). When HIV enters a person's bloodstream, it attacks and kills the T-helper lymphocytes, which are essential to the body in fighting off infections. As these cells are lost, so is the body's ability to fight infection. Possibly months after the initial infecting episode, an infected person develops a mononucleosis-like illness lasting a week or two. A person may then be free of symptoms for years. But as the T-helper cells die, the person becomes vulnerable to many serious infections. The expected mortality is 100%, and there is no vaccine available to develop specific immunity. | View Page |
| You Are At Risk! As a healthcare worker, you come into contact with bloodborne pathogens. These are infectious organisms, usually viruses, which live in human blood and other potentially infectious body fluids.The most important ones are...
Hepatitis B Virus (HBV)
Human Immunodeficiency Virus (HIV)
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| What causes HIV? HIV is caused by the Human Immunodeficiency virus.When HIV enters a person's bloodstream, it attacks and kills the T-helper cells. These cells are part of a group of white blood cells known as lymphocytes, which are essential to the body in fighting off infections.As these cells are lost, so is the body's ability to fight infection. | View Page |
| Important bloodborne pathogens The most important bloodborne pathogens are: Hepatitis B and C & Human Immunodeficiency Virus (HIV).
Hepatitis B is very infectious via the blood-borne route. 30% of needle-sticks from patients who are Hepatitis B will result in infection.
Hepatitis C is much more common in the United States.
HIV is rarely transmitted via needle-stick injury. Nevertheless, utmost care is needed, because of its very serious nature. HIV is not transmitted by casual contact.
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